instrumentsinc.com

Valid Email Server
Domain Lookup › instrumentsinc.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
instrumentsinc.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-20 10:17:32 UTC · ↺ Refresh

MX Hostnames

  • mx3c45.carrierzone.com
  • mx2c45.carrierzone.com
  • mx-01-us-west-2.prod.hydra.sophos.com
  • mx-02-us-west-2.prod.hydra.sophos.com
  • mx4c45.carrierzone.com
  • mx1c45.carrierzone.com

MX Priorities

  • mx2c45.carrierzone.com: 100
  • mx4c45.carrierzone.com: 120
  • mx-01-us-west-2.prod.hydra.sophos.com: 1
  • mx3c45.carrierzone.com: 110
  • mx-02-us-west-2.prod.hydra.sophos.com: 2
  • mx1c45.carrierzone.com: 10

A / AAAA Records

  • 198.49.23.144 (no PTR)
  • 198.49.23.145 (no PTR)
  • 198.185.159.144 (no PTR)
  • 198.185.159.145 (no PTR)

Mail Server IPs

  • 216.55.149.42 ↩ mx2c45.carrierzone.com
  • 216.55.149.44 ↩ mx4c45.carrierzone.com
  • 44.234.222.180 ↩ ec2-44-234-222-180.us-west-2.compute.amazonaws.com
  • 34.215.37.215 ↩ ec2-34-215-37-215.us-west-2.compute.amazonaws.com
  • 50.112.72.129 ↩ ec2-50-112-72-129.us-west-2.compute.amazonaws.com
  • 216.55.149.43 ↩ mx3c45.carrierzone.com

SOA Record

Raw SOA dns1.p01.nsone.net hostmaster.nsone.net 1711127352 43200 7200 1209600 3600
Primary NS (mname)
dns1.p01.nsone.net
Admin Email (rname)
hostmaster@nsone.net
Serial
1711127352
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
3600s

Nameservers (NS)

dns4.p09.nsone.net
ns01.squarespacedns.com
ns02.squarespacedns.com
ns03.squarespacedns.com
ns04.squarespacedns.com
dns1.p09.nsone.net
dns2.p09.nsone.net
dns3.p09.nsone.net

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spfc45.carrierzone.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

4 records
  • v=spf2 ip4:216.55.149.9 ~all
  • sophos-domain-verification=382cc56c4d25e46bb9c61ad5467525fe04d0d6ee61e6df2e2c2216ace4557bd1
  • SPFv=spf1 include:spfc45.carrierzone.com ~all
  • sophos-domain-verification=853135943c4894185df15b63250640ca45f6da3d
Full email verification for instrumentsinc.com

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